N-acetyl-3-mercapto-DL-valine

The L-form of penicillamine is toxic, which is why the D-form is used in medicine. N-acetyl-3-mercapto-DL-valine is an intermediate employed to synthesize the API penicillamine, also known as D-penicillamine in its pharmaceutical form.

API Name Penicillamine
CAS No 59-53-0
Molecular Formula C7H13NO3S
Molecular Weight 191.25 g/mol
Synonyms 2-acetamido-3-methyl-3-sulfanylbutanoic acid